Alright, let's work through 1140 times 7609 step by step
1140 × 7609 = 7609 × (1140)
+ 7609 × 0 yielding 0
+ 7609 × 40 resulting in 304360
+ 7609 × 100 which equals 760900
+ 7609 × 1000 that results in 7609000

= 8674260
